EP 3911617 A1 20211124 - SINTERED ALUMINA-ZIRCONIA BALLS
Title (en)
SINTERED ALUMINA-ZIRCONIA BALLS
Title (de)
GESINTERTE ALUMINIUMOXID-ZIRKONIUMOXID-KUGELN
Title (fr)
BILLES FRITTEES D'ALUMINE-ZIRCONE
Publication
Application
Priority
- FR 1900449 A 20190118
- EP 2020051178 W 20200117
Abstract (en)
[origin: WO2020148446A1] A sintered ball having: - the following crystallographic composition, in mass percentages on the basis of the total mass of the crystallised phases and for a total of 100%: - zircon < 25%; - 50% ≤ cubic zirconia + quadratic zirconia ≤ 95%, the cubic zirconia content being greater than 50%, the cubic zirconia content being the mass ratio (cubic zirconia / (cubic zirconia + quadratic zirconia)); - 0 ≤ monoclinic zirconia ≤ (10 - 0.2* quadratic zirconia)%; - 5% ≤ corindon ≤ 50%; - crystallised phases other than zircon, cubic zirconia, quadratic zirconia, monoclinic zirconia and corindon < 10%; - the following chemical composition, in mass percentages on the basis of oxides: 34% ≤ ZrO2 + HfO2, ZrO2 + HfO2 being the complement to form 100%; HfO2 ≤ 4.0%; 0.5% ≤ SiO2 ≤ 14.1%; 4.5% ≤ Al2O3 ≤ 49.6%; 2.75% ≤ Y2O3 ≤ 22.8%; MgO ≤ 5%; CaO ≤ 2%; oxides other than ZrO2, HfO2, SiO2, Al2O3, MgO, CaO and Y2O3 < 5.0%.
IPC 8 full level
C04B 35/488 (2006.01); B02C 17/20 (2006.01)
CPC (source: EP KR US)
B02C 17/20 (2013.01 - EP KR); C04B 35/4885 (2013.01 - EP KR US); C04B 2235/3206 (2013.01 - EP KR); C04B 2235/3208 (2013.01 - EP KR US); C04B 2235/3217 (2013.01 - US); C04B 2235/3225 (2013.01 - EP KR US); C04B 2235/3244 (2013.01 - US); C04B 2235/3248 (2013.01 - EP KR); C04B 2235/3418 (2013.01 - EP KR US); C04B 2235/3481 (2013.01 - EP KR); C04B 2235/349 (2013.01 - EP KR); C04B 2235/36 (2013.01 - EP KR); C04B 2235/5296 (2013.01 - EP KR); C04B 2235/5427 (2013.01 - EP KR); C04B 2235/5436 (2013.01 - EP KR); C04B 2235/5445 (2013.01 - EP KR); C04B 2235/6023 (2013.01 - EP KR); C04B 2235/6562 (2013.01 - EP KR); C04B 2235/6567 (2013.01 - EP KR); C04B 2235/76 (2013.01 - EP KR); C04B 2235/762 (2013.01 - EP KR US); C04B 2235/765 (2013.01 - EP KR US); C04B 2235/77 (2013.01 - EP KR); C04B 2235/94 (2013.01 - EP KR); C04B 2235/96 (2013.01 - EP KR)
Citation (search report)
See references of WO 2020148446A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020148446 A1 20200723; CN 113614050 A 20211105; EP 3911617 A1 20211124; FR 3091866 A1 20200724; FR 3091866 B1 20210122; KR 20210113664 A 20210916; US 2022153650 A1 20220519
DOCDB simple family (application)
EP 2020051178 W 20200117; CN 202080022898 A 20200117; EP 20701934 A 20200117; FR 1900449 A 20190118; KR 20217025590 A 20200117; US 202017423431 A 20200117